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# T1531 - Account Access Removal
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## [Description from ATT&CK](https://attack.mitre.org/wiki/Technique/T1531)
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<blockquote>Adversaries may interrupt availability of system and network resources by inhibiting access to accounts utilized by legitimate users. Accounts may be deleted, locked, or manipulated (ex: changed credentials) to remove access to accounts.
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Adversaries may also subsequently log off and/or reboot boxes to set malicious changes into place.(Citation: CarbonBlack LockerGoga 2019)(Citation: Unit42 LockerGoga 2019)</blockquote>
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## Atomic Tests
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- [Atomic Test #1 - Change User Password - Windows](#atomic-test-1---change-user-password---windows)
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- [Atomic Test #2 - Delete User - Windows](#atomic-test-2---delete-user---windows)
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<br/>
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## Atomic Test #1 - Change User Password - Windows
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Changes the user password to hinder access attempts. Seen in use by LockerGoga.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| user_account | User account whose password will be changed. | string | Administrator|
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| new_password | New password for the specified account. | string | HuHuHUHoHo283283@dJD|
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#### Run it with `command_prompt`! Elevation Required (e.g. root or admin)
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```
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net.exe user #{user_account} #{new_password}
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```
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#### Commands to Check Prerequisites:
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```
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net.exe user #{user_account}
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```
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<br/>
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<br/>
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## Atomic Test #2 - Delete User - Windows
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Deletes a user account to prevent access.
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**Supported Platforms:** Windows
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#### Inputs
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| Name | Description | Type | Default Value |
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|------|-------------|------|---------------|
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| user_account | User account to be deleted. | string | AtomicUser|
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#### Run it with `command_prompt`! Elevation Required (e.g. root or admin)
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```
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net.exe user #{user_account} /delete
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```
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#### Commands to Check Prerequisites:
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```
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net.exe user #{user_account} /add
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net.exe user #{user_account} P@$$w0rd
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```
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<br/>
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